421204033 has 4 divisors (see below), whose sum is σ = 435728340. Its totient is φ = 406679728.

The previous prime is 421204031. The next prime is 421204057. The reversal of 421204033 is 330402124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303003649 + 118200384 = 17407^2 + 10872^2 .

It is a cyclic number.

It is not a de Polignac number, because 421204033 - 2¹ = 421204031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421204033.

It is not an unprimeable number, because it can be changed into a prime (421204031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7262110 + ... + 7262167.

It is an arithmetic number, because the mean of its divisors is an integer number (108932085).

Almost surely, 2^421204033 is an apocalyptic number.

It is an amenable number.

421204033 is a deficient number, since it is larger than the sum of its proper divisors (14524307).

421204033 is a wasteful number, since it uses less digits than its factorization.

421204033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14524306.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 421204033 is about 20523.2559064102. The cubic root of 421204033 is about 749.6021789478.

Adding to 421204033 its reverse (330402124), we get a palindrome (751606157).

The spelling of 421204033 in words is "four hundred twenty-one million, two hundred four thousand, thirty-three".